Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a654469a67aecac…

MALICIOUS

PDF

45.0 KB Created: 2021-05-16 01:38:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3fa577b920a2183e70e265d48897c44c SHA-1: 7e8f24dc70e75718ff514a15f79584784469b9ee SHA-256: 8a654469a67aecac1c3dffd09f0ec9745e4cfd4527109c6fc73f62aa75245e0e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free spins, directing users to malicious redirector infrastructure. The embedded links, such as 'https://netcdn.xyz/app/406889139/sites-for-free-spins-for-coin-master-game-hack', are designed to lead victims to potentially harmful content. The ML classifier also flagged this PDF as malicious, supporting the observed malicious redirector links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/406889139/sites-for-free-spins-for-coin-master-game-hack In PDF document text
    • http://lawpatron.ru/images/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • http://lawpatron.ru/images/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • http://lawpatron.ru/images/minecraft-app-store-free_GM479516143.pdfIn PDF document text
    • http://lawpatron.ru/images/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://lawpatron.ru/images/coin-master-free-spins-instagram_GM406889139.pdfIn PDF document text
    • http://lawpatron.ru/images/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • http://lawpatron.ru/images/earn-robux_GM431946152.pdfIn PDF document text
    • http://lawpatron.ru/images/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://lawpatron.ru/images/roblox-catalog-free_GM431946152.pdfIn PDF document text
    • http://lawpatron.ru/images/minecraft-toys-for-free_GM479516143.pdfIn PDF document text
    • http://lawpatron.ru/images/app-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lawpatron.ru/images/free-roblox-dominus_GM431946152.pdfIn PDF document text
    • http://lawpatron.ru/images/coin-master-unlimited-spins_GM406889139.pdfIn PDF document text
    • http://lawpatron.ru/images/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lawpatron.ru/images/how-to-get-free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • http://lawpatron.ru/images/como-generar-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lawpatron.ru/images/earn-free-robux_GM431946152.pdfIn PDF document text
    • http://lawpatron.ru/images/minecraft-free-app_GM479516143.pdfIn PDF document text
    • http://lawpatron.ru/images/how-to-get-java-minecraft-free_GM479516143.pdfIn PDF document text
    • http://lawpatron.ru/images/can-i-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b1b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B1B 25304 bytes
SHA-256: 23d04870fa604beb99c95ec271cbc5ecfc0e0442dc56d480e46100bde21d9eef
font_01_sfnt_off000084bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84BC 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008ea6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EA6 17884 bytes
SHA-256: 91ca8f62c0979a078180dc6a81f20f20b88a175a519d6a4650188b448ff1f25f

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